Nut.



f "Nm 723,373. PATBNTBD MAR. 24, 1903,.

' o.. C. DURYBA 3 M. 0. WHITE.

NUT.

f fai/225016.- f 0d/266565: @am a am ea;

UNITED STATES PATENT OFFICE.

OTHO C. DURYEA AND MORRIS C. WHITE, OF LOS ANGELES, CALIFORNIA, ASSIGNORS TO NATIONAL FREE PISTON ENGINE COMPANY, (LIMITED,) OF LOS ANGELES, CALIFORNIA, A CORPORATION OF CALIFORNIA.

NUT.

SPECIFICATION forming part of Letters Patent No. 723,373, dated March 24, 1903.

Application filed May 23,1902. Serial No. 108,727. (No model.)

To all whom it may concern,.-

Beit known that we, OTHO C. DURYEAand- MORRIS C. VHITE, citizens of the United States, residing at Los Angeles, in thelcounty of Los Angeles and State of California, have invented a new and useful Nut, .of whichthe following is a specification.'

Our invention relates to a nut that may be adjusted to give any desired gripV on the ro screw; and one object -of our invention is to provide for a very ne adjustment without the use of fine threads or delicate parts.

Another object of our invention is to provide a nut which will be able to withstand severe strains and one whichwillbe capable of sustaining hard service and long and continous wear.

Other objects-such as simplicity,com pactness, and ease of adjustment-#are attained,v

zo which will be brought out in the following description.

Referring tothe drawings, Figure I is a longitudinal section through the nut. Fig. II is a section taken on the line II'II of Fig. I.

1 designates a screw.

2 is one part of the nut provided with internal threads 3. 4 is another part provided with internal threads 5. 5 may be of the same pitch and adapted-to 3o engage the screw 1. A

6 and 7 are pins which project into chambers in each part 2 and 4. The pins Vpreventthe parts 2 and 4 from turning relatively to each other. One pin is positioned in one dia# metrical plane of the parts 2 and 4, and the other pin is positioned in another diametri'cal plane of the parts, so that when assembling the parts of the nut the threads of each part .will be placed in proper relations. The part 4o 2 has external threads 9.

external threads 10, which may be of different pitch from the threads 9.-

11 is a vsleeve provided withV one set of threads 12, which engage the threads 9, and is also provided with another set of threads A v Y Thus when it is desired. to lock'the nut from 13, which engageV the threads 10.

14 is a lock-nut which may engage the threads 10 and prevent theY sleeve 11 from turning..

The threads 3 and.

The part 4 has' tions shown in thedrawings, and by loosening the lock-nut 14 the sleeve 8 may be turned,

which willeither draw the lparts 2 and. 4 together orforce themv apart, depending on the ldirection o'rotation of the sleeve.

Assuming that the threads 9, 12, 10, and

'13 are right-hand threads, when the sleeve 11 is given one revolution it is moved along the .member 2 the lthickness of one thread 9 and draws the part 4toward the part 2 a distance equal Vto the difference between the thickness of the threads 9 and 10. Thus by making the threads 9 and 12 of one pitch and the threads 10 and 13 of a pitch slightly different the parts may be adjusted to a nicety and any degree of pressure of the internal threads of each part against the threads of the screw 1 may be secured. For example, by constructing the two pitches with a difference of one one-thousandth one revolution- .ofthe sleeve will increase or decrease the distance between the two parts one one-thousandth of an inc'h, according to the direction of rotation of the sleeve. Thus the size of the threads may be as large as desired to se- :cure the requisite strength.

Thepins'd and 7 may be readily withdrawn' by removing the lock-nut 14, which -acts to hold them in place.

It is immaterial whether the screw 1 turns and the nut'is stationary, or vice versa. In the drawings we have shown a stationary nut. It is obvious that various changes may b e made in the herein-described embodiment of our invention without eva'ding the scope of the claims.

The nut may be used as alock-nut, `if desired, by providing the part 2 with`means-to v be engaged by a .'wrench. For instance, a hexagonal head may be formed thereon. The 1ock-nut'14 may be dispensedwith.

turning on the screw the sleeve 11 may be turned a sufcient degree to draw the parts 2 and 4 together and cause the internal of the screw.

What we claim, and desireA to secure by Letters Patent of the United States, is

l. A nut having two parts provided with dissimilar threads, means to prevent said parts from turning relatively to each other, and a sleeve having dissimilar threads which engage the rst-named threads.

2. A nut having two internally-threaded parts, one part having an external thread of one pitch, the other part having an external thread of agreater pitch, and a sleeve having threads which engage said external threads.

3. A n ut having two parts, one of said lparts having threads, means to prevent said parts from turning relatively to each other, a sleeve engaging both of said parts, said sleeve having threads which engage with the threads of said part. Y

4. A nut with two parts having similar sets Vot threads and dissimilar sets of threads,

means to prevent said parts from turning relatively to each other, and a third part having dissimilar sets ot' threads which engage said first-named dissimilar sets of threads.

5. A nut having two internally-threaded parts, one part having an external thread of one pitch, the other part having an external thread of another pitch, a sleeve having dissimilar threads which engage said external threads, and means to hold said two parts from rotating relatively to each other.

6. A nut having two internally-threaded parts, one part having an external thread of one pitch, the other part having an external thread of another pitch, a sleeve having threads which engage said external threads, and a pin slidably mounted in one of said parts and engaging the other part.

7. A nut having two internally-threaded parts, one part having external threads of one pitch, the other part having external threads of another pitch, a sleeve having threads which engage said external threads, and a removable pin engaging both of said parts.

8. A nut having two internally-threaded parts, one part having an external thread, a sleeve having internal threads which engage said external threads, said sleeve also engaging said other part, and means to hold said sleeve from rotation relatively to said parts.

9. A nnt having two internally-threaded parts, one part having an external thread, a sleeve having internal threads which engage said external-threads, vsaid sleeve also engaging said other part, and detachable means to hold said sleeve from rotation relatively to said parts. i

10. A nut vhaving two internally-threaded parts, one part having an external thread, a sleeve having internal threads which engage said external threads, said sleeve also engaging said other part, and a lock-nut engaging Ithe external threads of one of said parts and movable into engagement with said sleeve.

11. A nut having two internally-threaded parts, one part having an external thread, a sleeve having internal threads, said sleeve also engaging said other part, a plurality of pins mounted in one of said parts and engaging the other part, said pins being positioned at diierentldiametrical planes of each part.

12. A nut having a plurality of parts, said parts having screw-threads of equal pitch, means to hold said parts from rotating relatively to each other, and means to move one of said parts in one direction at one speed and to move another part in the same direction at another speed.

13. A nut having two internally-threaded parts, one part having an external thread .of one pitch, the other part having an external thread of a greater pitch, a sleeve having two sets of threads one set having a greater pitch than the other set, one of Said sets of threads engaging the external threads of one of said parts, the other of said sets of threads engaging the external threads of the other of said parts.

In Witness whereof Wel have signed our names to this specication, in the presence of two subscribing witnesses, at Los Angeles, California, this 17th day of May, 1902.

OTHO C. DURYEA. MORRIS C. WHITE. Witnesses:

G. T. HAcxLnv, F. M. TowNsEND.' 

